WP4TUN — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Puerto Rico Most frequent locator attributed to this token: FK68

Receiver-side FT8 activity involving WP4TUN, decoded by SO8OO in southeastern Poland. 222 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 14 UTC dates in the available aggregate history. Observed between 2026-06-15 and 2026-09-21.

These are automated observations at the SO8OO receiver, not an official contact log. Times are UTC. Attribution follows decoded FT8 message structure: CQ uses the first token and directed-looking messages use the second. Free text that resembles a directed message can be attributed imperfectly. Summary S/N reflects propagation plus SO8OO receiver, antenna and local-noise conditions. Counts are not adjusted for monitoring outages; transmissions that were not decoded are absent. Inferred entity and location data may be inaccurate for portable, remote or special-event operation.

SO8OO decoded 222 FT8 messages attributed to WP4TUN as the transmitting token by decoded message structure across 14 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (52%), followed by 20 m (48%). Most decodes (89%) fell within the six-hour window 21:00-03:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's weak S/N range (62%); the estimated median was -16 dB.

Overview

222

Messages attributed

UTC dates decoded

Active 15-min windows

-16 dB

Estimated median S/N

Bands

40m · 116 20m · 106

First attributed message: 2026-06-15
Last attributed message: 2026-09-21 02:07 UTC

Observed FT8 message patterns

Attributed sample: 222 messages
Active dates: 14 UTC dates
Estimated median S/N: -16 dB
Estimated 10th-90th percentile: -21 to -12 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 138, moderate (-15 to -9 dB) 78, strong (≥ -8 dB) 6.

WSJT-X defines S/N reports against a 2,500 Hz reference noise bandwidth. The ranges above are SO8OO receiver-side display categories, not official WSJT-X classes, transmitter-power measurements or estimates of how easy the station is to hear elsewhere. Statistics include only successful decodes on SO8OO's monitored FT8 channels; transmissions that were not decoded are absent.

Frequent counterpart tokens observed at SO8OO

Tokens most often paired with WP4TUN in decoded directed-looking exchanges:

K0PT · United States ×2 9A4ZM · Croatia DF1KW · Fed. Rep. of Germany DL6MRS · Fed. Rep. of Germany EA5W · Spain EA7GHD · Spain EB4DMH · Spain F1ODM · France F4LMX · France G4SJG · England KA6PYE · United States N2LEE · United States

Attributed messages by UTC hour

Rolling 90-day UTC chart window. Counts follow decoded message structure: the first token for CQ, or the second token in a directed-looking message.

Most frequent locator attributed to WP4TUN

The map compares the centres and boundaries of the locator field attributed to this token by decoded message structure, 2° × 1° as a Maidenhead square, and SO8OO's six-character receiver square. The separation is not an exact antenna-to-antenna distance or a radio-path length.

Attributed locator: FK68 · 120 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 8,360 km (approx.)
Last such locator decoded: 2026-09-21 02:07 UTC

A decoded locator can describe portable, remote or special-event operation and is not proof of a permanent station address or transmitter identity.

Observed FT8 exchanges

S/N cells show: decoded at SO8OO / report transmitted by the counterpart. An observed exchange is not a QSL or an official logbook confirmation.

Time UTC	Band	WP4TUN S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-21 01:58	40m	-19 / -	K0PT	- / -	2	✓ Closing fragment
09-21 01:53	40m	-16 / -	NL7OT	- / -14	5	✓ Closing fragment
09-20 03:32	40m	- / -16	R3ES	+7 / -	3	✓ Closing fragment
09-20 03:30	40m	-20 / -	UA3GIE	+1 / -12	4	Partial capture
09-20 03:17	40m	- / -13	F1DXP	+6 / -	2	Partial capture
09-20 03:03	40m	-19 / -16	UA6FM	-2 / -11	3	✓ Full exchange observed
09-20 02:56	40m	-22 / -11	HJ4MMO	-19 / -10	2	Partial capture
09-20 02:55	40m	- / -13	UA6FM	-6 / -	4	Partial capture
09-20 02:53	40m	-17 / -	K3GE	- / -8	2	✓ Closing fragment
09-20 02:52	40m	- / -20	RT6DU	-3 / -	3	✓ Closing fragment
09-20 02:48	40m	-21 / -	RU6FS	-8 / -14	2	✓ Closing observed
09-20 02:44	40m	- / -13	RU6FS	-2 / -	3	Partial capture
09-20 02:42	40m	-21 / -16	TA4SSK	-15 / -	7	✓ Closing observed
09-20 02:19	40m	-18 / -	UX7QV	- / -20	3	✓ Closing fragment
09-20 01:17	40m	- / -20	RL9LR	+4 / -	3	✓ Closing fragment
09-20 01:06	40m	- / -	F4JCU	-2 / -	4	Partial capture
09-20 01:06	40m	- / -15	UA6LIK	-7 / -	3	✓ Closing fragment
09-20 00:48	40m	- / -21	IZ8PPI	-18 / -	2	Partial capture
09-20 00:38	40m	- / -	ON8WR	-12 / -	2	Partial capture
09-20 00:28	40m	- / -19	IZ8PPI	-18 / -	2	Partial capture
09-20 00:25	40m	- / -20	IK6DLK	+11 / -	3	✓ Closing fragment
09-19 06:14	40m	- / -12	OE9DAI	+3 / -	12	✓ Closing fragment
09-19 06:13	40m	- / -	DK3TA	0 / -	2	Partial capture
09-19 06:11	40m	- / -24	PE1NPS	-8 / -	2	Partial capture
09-19 06:09	40m	- / -7	ON3CCM	-8 / -	4	✓ Closing fragment
09-19 06:08	40m	- / -19	G0VAX	-10 / -	2	✓ Closing fragment
09-19 06:06	40m	- / -13	EI4KF	-4 / -	2	✓ Closing fragment
09-19 05:55	40m	- / -13	OK4SD	+9 / -	3	✓ Closing fragment
09-19 05:54	40m	- / -8	DH1NGL	-3 / -	5	Partial capture
09-19 05:30	40m	- / -	DL7ARV	+7 / -	9	Partial capture
09-19 05:28	40m	- / -	SA4AGM	-10 / -	3	Partial capture
09-19 05:28	40m	- / -7	F4EOC	-2 / -	5	✓ Closing fragment
09-19 05:26	40m	- / -11	DG1KFR	-3 / -	2	✓ Closing fragment
09-19 05:21	40m	- / -4	PA1RC	+1 / -	2	✓ Closing fragment
09-19 05:19	40m	- / -8	IU1TLG	-6 / -	3	✓ Closing fragment
09-19 05:15	40m	- / -	DK6WH	+4 / -	2	Partial capture
09-19 05:09	40m	- / -	DC9TS	-12 / -	4	Partial capture
09-19 05:07	40m	- / -15	F4JUQ	-4 / -	5	✓ Closing fragment
09-19 05:01	40m	- / -15	IZ7NMD	-4 / -	2	✓ Closing fragment
09-19 04:57	40m	- / -	DL2EMS	-16 / -	2	Partial capture
09-19 04:54	40m	- / -	IK3GBG	+10 / -	2	Partial capture
09-19 04:53	40m	- / -	DG1ASE	-9 / -	3	Partial capture
09-19 04:32	40m	- / -10	IK5PWQ	+13 / -	3	✓ Closing fragment
09-19 04:32	40m	- / -9	IZ2QPP	0 / -	6	✓ Closing fragment
09-19 04:20	40m	- / -	F4HQL	-2 / -	2	Partial capture
09-19 04:16	40m	- / -	F4HQL	+6 / -	2	Partial capture
09-19 03:17	40m	- / -20	GW4TPG	-8 / -	3	✓ Closing fragment
09-19 03:05	40m	- / -17	IZ8PPI	-18 / -	3	Partial capture
09-19 02:53	40m	- / -10	EA2ARU	-15 / -	3	Partial capture
09-19 02:41	40m	- / -13	F5IYE	+1 / -	3	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

Frequency values are decoder audio offsets in hertz, not RF frequencies.

40m

UTC    dB Audio  Message
015415 -13 1144  NL7OT WP4TUN RR73 (x4)
015645 -19 1145  CQ WP4TUN FK68
015845 -20 1146  K0PT WP4TUN RR73 (x2)
020115 -19 1145  CQ WP4TUN FK68 (x5)
020515 -18 1146  DC9GT WP4TUN -25
020745 -21 1145  CQ WP4TUN FK68                        a1
024100 -12 1144  WP4TUN K3TJK FN20

60m

UTC    dB Audio  Message
024400 -10 2403  WP4TUN IU3VGK JN55 (x2)

80m

UTC    dB Audio  Message
022345  +1 1659  WP4TUN RZ6CO LN04 (x2)
012230  +5 1269  WP4TUN ON6AA JO11 (x3)

20m

UTC    dB Audio  Message
101330  +7  523  WP4TUN DK0ND -25 (x6)
101800 -14 1620  WP4TUN CT1BFP IM59
223815  +5 2370  WP4TUN UA6YW LN04 (x8)

Decoder S/N history by band

Count-weighted daily averages across messages attributed to this profiled token and successfully decoded at SO8OO, limited to the rolling 90-day UTC chart window.

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